Lauren Chan, MD
NPI 1457640443 · Vascular & Interventional Radiology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lauren Chan, MD is a Vascular & Interventional Radiology Physician provider in Stanford, CA (NPI 1457640443).
Provider details
- NPI number
- 1457640443
- Entity type
- Individual
- Primary specialty
- Vascular & Interventional Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A122746 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
52 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 29 | $10 |
| X-Ray of Chest, 2 Views71046 | 12 | $12 |
| Ct Scan Head Or Brain Without Contrast70450 | 11 | $46 |
Typical Medicare-allowed amounts for these services range $10–$46 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (2)
- 2351 Clay StSuite 380San Francisco, CA 94115-1931Phone: (415) 600-3954
- 1425 S Main StWalnut Creek, CA 94596-5318Phone: (925) 295-4000
Registry dates
- Enumerated
- 2011-03-30
- Last updated
- 2024-04-05
- Certified
- 2024-04-05
Frequently asked questions
- What is Lauren Chan's NPI number?
- Lauren Chan's National Provider Identifier (NPI) is 1457640443, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lauren Chan's specialty?
- Lauren Chan is listed in the NPPES registry with a primary specialty of Vascular & Interventional Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Lauren Chan located?
- Lauren Chan's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Lauren Chan's phone number?
- The practice phone number listed in the NPPES registry for Lauren Chan is (650) 723-4000.
- Does Lauren Chan accept Medicare?
- Lauren Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lauren Chan's NPI active?
- Yes — Lauren Chan's NPI (1457640443) is active in the NPPES registry as of the last update on 2024-04-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.